LIGHT ESTER
Magnesium Stearate
- light ester
A fatty ester. Esters give slip and a smooth after-feel; lighter ones read dry and silky, heavier ones read rich.
- products in our library
- 25
- of researched products
- 0.4%
- on the label, in our dry shampoos
- usually #8
- most common in
- Dry shampoo
- in water
- Oil-soluble
At a glance
Four things worth knowing about how this ingredient behaves on hair.
How much of it is left on hair between washes.
What it takes to get it off the hair again.
Where the class sits between an ester and a butter.
How much it slows water leaving the strand.
| Property | Level | Out of |
|---|---|---|
| Buildup risk | Needs a cleanser | 4 of 5 |
| Rinse-out behaviour | Rinses with a cleanser | 2 of 5 |
| Weight | Light | 2 of 5 |
| Sealing | Light | 2 of 5 |
What it does for a formula
What Magnesium Stearate does
The general function first, then how the role changes by product type where we have researched it.
A light, fast-spreading lipid used where an oil would feel heavy.
Smooths the feel of the strand without adding hold or cleaning.
It takes a surfactant to remove, which matters on a low-detergent routine.
Charge
Charge is not recorded for this ingredient.
Solubility
Needs a surfactant to remove. On a low-detergent routine it can build up over time.
Where it appears
Where it appears
One row per product category in our library: how many products list it, what share of that category that is, and where it typically sits on the label.
| Product type | How common | Typical position on label ? |
|---|---|---|
Dry shampoo
16 products
|
supporting · #8 | |
Shampoo
3 products
|
secondary · #16 | |
Styler: texture spray
3 products
|
secondary · #11 | |
Styler: hairspray
2 products
|
secondary · #12 | |
Styler: mousse
1 product
|
secondary · #9 |
| Product type | Products | Share of category | Median position | Earliest position | Band |
|---|---|---|---|---|---|
| Dry shampoo | 16 | 12% | 8 | 3 | supporting |
| Shampoo | 3 | 0% | 16 | 4 | secondary |
| Styler: texture spray | 3 | 3% | 11 | 10 | secondary |
| Styler: hairspray | 2 | 1% | 12 | 9 | secondary |
| Styler: mousse | 1 | 0% | 9 | 9 | secondary |
We have not researched differences by product type yet. The reading below comes from where it sits on the labels in our library.
Position footprint
Every listing in our library, by position on the label.
| Positions | Zone | Listings |
|---|---|---|
| 1-3 | Leading | 3 |
| 4-8 | Supporting | 7 |
| 9-15 | Secondary | 12 |
| 16-25 | Lower | 3 |
| 26+ | Trace | 0 |
How to read this
US labelling rules put ingredients above 1% in descending order of amount; below 1% they may be listed in any order.
So position tells you about relative amount only above that line, and we never convert a position into a percentage.
Who should pay attention
Formulation guidance for specific hair conditions, limited to the label positions where it applies. It is not a conclusion about any finished product, or about you.
A light emollient: it softens the surface with noticeably less weight than an oil or a butter.
Spreads thin and lowers friction between strands without the heaviness of a fixed oil.
Read from this ingredient’s chemical class. Where we have researched the ingredient itself, that reading replaces the class one.
Why it matters to shoppers
What seeing this ingredient tells you, what it does not, and the limits of our own method.
- softness without weight
- a softer feel
- something that lasts through the day
- body without weight on fine hair
- an exact safety score (we do not publish one for any ingredient)
- how a finished product performs, which depends on the whole formula, not one line of it
- the exact percentage in a bottle, because label position never converts into a number
- a supporting emollient alongside the main ingredients in our dry shampoos
- it was on the printed ingredient list of every product we counted (we read labels, not marketing copy)
- that a product is right or wrong for you
We do not publish safety scores or hazard grades. Where a regulator has published a restriction or a use condition, we state it and cite it; otherwise we describe what the ingredient does and stop.
Commonly paired with
The ingredients that most often appear alongside this one in our library. We leave out the near-universal ones, because they pair with everything and tell you nothing.
- Alcohol Denat. · 21
- Hydrofluorocarbon 152a · 18
- Rice Starch · 15
- Butane · 13
- Tapioca Starch · 11
- Cetrimonium Chloride · 10
- Silica · 8
- Isobutane · 7
- Aluminum Starch Octenylsuccinate · 6
- Hydroxycitronellal · 6
The number beside a name is how many products in our library list both.
These ingredients tend to appear together to carry the formula and let it dry, give the formula body and hold, and improve feel after rinsing.
Found in these products
The most prominent placements first. The badge is the position on that product’s own ingredient list.
Not Your Mother's · Dry shampoo
Beach Babe Texturizing Dry Shampoo Powder
#3 on the label · $13.69/oz
Not Your Mother's · Dry shampoo
Clean Freak Dark Hair Dry Shampoo Powder
#3 on the label · $11.99/oz
Not Your Mother's · Dry shampoo
Dry Shampoo Powder
#3 on the label · $11.99/oz
Together Beauty · Dry shampoo
Life In The Fast Lane
#4 on the label · $6.38/oz
Verb · Shampoo
Dry Shampoo Powder
#4 on the label · $11.00/oz
Maria Nila · Dry shampoo
Dry Shampoo
#7 on the label · $6.09/oz
Paul Mitchell · Dry shampoo
Intense Dry Shampoo
#7 on the label · $3.55/oz
Paul Mitchell · Dry shampoo
Multitasking Dry Shampoo
#7 on the label · $3.55/oz
Keratin Complex · Dry shampoo
KCRESET Reparative Dry Shampoo
#8 on the label · $4.62/oz
Not Your Mother's · Dry shampoo
Original Dry Shampoo
#8 on the label · $1.71/oz
UNITE Hair · Styler
BOOSTA Finishing Spray For Volume
#9 on the label · $4.94/oz
UNITE Hair · Styler
TEXTURIZA Finishing Foam
#9 on the label · $6.44/oz
See all 25 products in the library that list Magnesium Stearate
Identity
What this entry is, and what our references call it.
Magnesium Stearate
- CAS 557-04-0
- PubChem 11177
- emollient
- magnesium stearate
For your hair?
Whether Magnesium Stearate matters for your hair depends on your hair.
25 products in our library list itWhat this ingredient does, and where it sits on the labels we have researched.
A verdict on any product that contains it, and never a safety grade.
We do not physically test your hair. Everything above comes from the ingredient lists in our library and from published references. The consultation is what turns it into a plan.
References
Sourced Backed by a manufacturer or regulatory source.
This ingredient
- Manufacturer or regulatory PubChem : Compound identity: CID 11177, CAS 557-04-0, C36H70MgO4 · accessed 2026-08-28
How this page was made
- Every number above is counted from the ingredient lists in our own product library: 25 of 6816 researched products list this ingredient. Nothing on this page is written per ingredient.
- The dots are levels, not scores. Each one comes from what kind of ingredient it is (its chemical class, charge and solubility) or from where it sits on the labels we have.
- US labelling rules put ingredients above 1% in descending order of amount; below 1% they may be listed in any order. Position tells you about relative amount only above that line, and we never convert a position into a percentage.
- The prominence bands (leading, supporting, secondary) are the same ones the product pages use to read a single label, applied here to the median position across a category.
- We do not publish safety scores or hazard grades. Where a regulator has published a restriction or a use condition, we state it and cite it; otherwise we describe what the ingredient does and stop.
- Identifiers and references appear only when a published source is attached to this entry. Without one, we leave the row out rather than fill it in.
- This is cosmetic information, not medical advice, and nothing here diagnoses or treats a health condition.
- Entry last updated 2026-09-22. Product-page methodology: the product library.
